If assist damage were viewable for players, both in the game and through the API, we could see a more robust picture of our performance and adjust/assess accordingly. Spotting and tracking are core components of many tanks and WG is collecting the data in every battle, yet nothing is available beyond the battle results screen.

Yes. Especially in the new meta where some lights and mediums have been neutered. Playing a secondary support, scout, track, and assist role is hugely important and relatively overlooked in the current in game stat snapshot.